Meanings
plural unified atomic mass units
- chemistryA unit of mass equal to 1/12 the mass of an atom of the ¹²C isotope of carbon.
Synonyms: dalton, atomic mass unit
Synonyms & antonyms
nounA unit of mass equal to 1/12 the mass of an atom of the ¹²C isotope of carbon.
Cite this entry
unified atomic mass unit. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/unified%20atomic%20mass%20unit
“unified atomic mass unit.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/unified%20atomic%20mass%20unit. Accessed November 5, 2026.
WatkinsX Dictionary, s.v. “unified atomic mass unit,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/unified%20atomic%20mass%20unit.
Source: unified atomic mass unit on Wiktionary, CC BY-SA 4.0.